Fury

(A vague mashup of HTTYD/Venom) Specimens, "Dragons", need a host, a symbiotic bond that is either parasitic or mutualistic, to survive. For the recently escaped "Hel-Spawn", the perfect host is found in a less-than ideal young man with more to him than meets the eye. Rated M to be safe (Trigger Warnings in Prologue)(Snail to Slow Burn Hiccstrid, no slash)(Modern AU)